Alphabetic Index FY2027

C63.9

Malignant neoplasm of male genital organ, unspecified

FY2027Chapter 2: Neoplasms/C60–C63 Malignant neoplasms of male genital organs

BillableComplete code, valid to report

    C63.9 (also written C639) is a billable ICD-10-CM diagnosis code for malignant neoplasm of male genital organ, unspecified. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 10 codes in category C63 (Malignant neoplasm of other and unspecified male genital organs). The Alphabetic Index lists it under 1 entry.

    Guidelines tip

    From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.

    A primary malignancy code stays in use until treatment directed at that site is completed. After that, with no evidence of disease at the site, Z85 gives the former site.

    Guidelines I.C.2.mCurrent malignancy versus personal history of malignancyRead the official text

    Includes

    Further defines or gives examples of the content of the category.

    Also from chapter/block level (1 note)
    Inherited from C60–C63 Malignant neoplasms of male genital organs
    • malignant neoplasm of skin of male genital organs

    Inclusion terms

    Conditions classified to this code.

    This code
    • Malignant neoplasm of male genitourinary tract NOS

    Notes

    Also from chapter/block level (8 notes)
    Inherited from Chapter 2 Neoplasms
    • Functional activity
    • All neoplasms are classified in this chapter, whether they are functionally active or not. An additional code from Chapter 4 may be used, to identify functional activity associated with any neoplasm.
    • Morphology [Histology]
    • Chapter 2 classifies neoplasms primarily by site (topography), with broad groupings for behavior, malignant, in situ, benign, etc. The Table of Neoplasms should be used to identify the correct topography code. In a few cases, such as for malignant melanoma and certain neuroendocrine tumors, the morphology (histologic type) is included in the category and codes.
    • Primary malignant neoplasms overlapping site boundaries
    • A primary malignant neoplasm that overlaps two or more contiguous (next to each other) sites should be classified to the subcategory/code .8 ('overlapping lesion'), unless the combination is specifically indexed elsewhere. For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned.
    • Malignant neoplasm of ectopic tissue
    • Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified (C25.9).

    Alphabetic Index terms

    Terms the official Alphabetic Index lists for this code. 1 entry